I like the Manns 1 minus, and the Baby X (baby X is a 1 minus with a square lip that dives to 2'), those are readily available. I have some discontinued Sebile Crankster SR 50 that are 1/4oz and they dive about 6" or so, they make a small wake when reeled slow but both largemouth and smallmouth seem to really like them. The others that I like have been mentioned, like the Bomber square A but one that wasn't and is new a little harder to find is the Bagley Rattlin' Kill'R B2, it isn't balsa, it is a plastic bait and on 10lb line it hits 3', the rattle is very low pitched and they deflect really well and most importantly they catch fish. Last, but not least, look at the Yo-Zuri 3DS series, the "S" means small, most baits run 1/4 to 1/2oz but the 3DS crankbaits are really good, I have the SR (shallow runner) versions in Holo bluegill and Tennessee shad and they aren't square bills but they deflect well and run great at high speed, the 3DS popper is something you will want to look at as well.